Home / 66,653.28-91,981.58-38,358.96

Finding the Fourth Proportional to 66,653.28, 91,981.58 and 38,358.96

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Solution

The fourth proportional to 66,653.28, 91,981.58 and 38,358.96 is: 52,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,653.28 : 91,981.58 = 38,358.96 : x
  2. Step 2: Convert to fraction form
    66,653.28/91,981.58 = 38,358.96/x
  3. Step 3: Cross multiply
    66,653.28x = 91,981.58 × 38,358.96
  4. Step 4: Simplify right side
    66,653.28x = 3,528,317,747.96
  5. Step 5: Solve for x
    x = 3,528,317,747.96/66,653.28
  6. Step 6: Final answer
    x = 52,935.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.